Android Creating App Widget

Here i am presenting an idea of a widget on the main screen of the device. 

download the code from http://www.mediafire.com/download.php?h2s0uw7wju7vd02

Creat a project and have main activity with name

1)JiteshActivity.java

package com.jitesh.uselesswidget;

import com.jitesh.uselesswidget.R;

import android.app.Activity;

import android.os.Bundle;

public class JiteshActivity extends Activity {

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        

        

    }

}

2)UselessWidgetProvider .java

package com.jitesh.uselesswidget.widgetprovider;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Locale;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.BasicResponseHandler;

import org.apache.http.impl.client.DefaultHttpClient;

import org.json.JSONArray;

import org.json.JSONObject;

import com.jitesh.uselesswidget.R;

import com.jitesh.uselesswidget.settings.Preferences;

import android.appwidget.AppWidgetManager;

import android.appwidget.AppWidgetProvider;

import android.content.Context;

import android.content.SharedPreferences;

import android.content.SharedPreferences.Editor;

import android.preference.PreferenceManager;

import android.util.Log;

import android.widget.RemoteViews;

import android.widget.RemoteViews.RemoteView;

public class UselessWidgetProvider extends AppWidgetProvider {

@Override

public void onUpdate(Context context, AppWidgetManager appWidgetManager,

int[] appWidgetIds) {

DefaultHttpClient client = new DefaultHttpClient();

HttpGet get = new HttpGet("http://search.twitter.com/search.json?q=twitter");

BasicResponseHandler handler = new BasicResponseHandler();

String response = null;

String text=null;

Date d=null;

SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);

try{

response = client.execute(get,handler);

if(response!=null){

JSONObject object = new JSONObject(response);

JSONArray array = object.getJSONArray("results");

if(array.length()>0){

JSONObject tweet = array.getJSONObject(0);

text = tweet.getString("text");

String dateStr = tweet.getString("created_at");

SimpleDateFormat sdf = new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss Z",Locale.US);

d = sdf.parse(dateStr);

Log.v(getClass().getName(),"Date: "+d+" Text: "+text);

Editor e = preferences.edit();

e.putString(Preferences.PREFERENCE_TWEET, text);

e.putLong(Preferences.PREFERENCE_TIME, d.getTime());

e.commit();

}

}

}

catch(Exception e){

e.printStackTrace();

}

SimpleDateFormat sdf2 = new SimpleDateFormat("d/MM/yy HH:mm");

if(d==null && text==null){

text = preferences.getString(Preferences.PREFERENCE_TWEET, "Indisponible en ce moment!");

Long dateLong = preferences.getLong(Preferences.PREFERENCE_TIME, -1);

if(dateLong!=-1)d=new Date(dateLong);

}

if(d!=null && text!=null){

for(int i = 0; i<appWidgetIds.length;i++){

int appWidgetId = appWidgetIds[i];

RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget);

remoteViews.setTextViewText(R.id.textViewText, text);

remoteViews.setTextViewText(R.id.textViewTime, sdf2.format(d));

appWidgetManager.updateAppWidget(appWidgetId, remoteViews);

}

}

}

}

3)Preferences .java

package com.jitesh.uselesswidget.settings;

public class Preferences {

public static final String PREFERENCE_TWEET = "com.jitesh.uselesswidget.preference.tweet";

public static final String PREFERENCE_TIME = "com.jitesh.uselesswidget.preference.time";

}

4)main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical"

    android:gravity="center_horizontal|center_vertical"

    >

    <TextView

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:text="@string/hello"

        android:layout_margin="20dp"

        style="@android:style/TextAppearance.Medium"

        />

</LinearLayout>

5) res/layout/widget.xml

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:background="@drawable/appwidget_bg" >

<ImageView

   android:id="@+id/imageViewWidget"

   android:layout_width="68dp"

   android:layout_height="68dp"

   android:src="@drawable/reynders"

   android:layout_margin="8dp"

   />

<TextView

   android:id="@+id/textViewText"

   android:layout_width="fill_parent"

   android:layout_height="wrap_content"

   android:layout_toRightOf="@id/imageViewWidget"

   android:textColor="#FFFFFF"

   android:layout_marginTop="4dp"/>

<TextView

   android:id="@+id/textViewTime"

   android:layout_width="wrap_content"

   android:layout_height="wrap_content"

   android:layout_alignParentRight="true"

   android:layout_alignParentBottom="true"

   android:textColor="#BBBBBB"

   android:layout_margin="4dp"

   />

</RelativeLayout>

7) res/xml/uselessappwidgetprovider.xml

<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"

    android:minWidth="294dp"

    android:minHeight="72dp"

    android:updatePeriodMillis="1800000"

    android:initialLayout="@layout/widget"    

>

</appwidget-provider>

8)res/values/strings.xml

<?xml version="1.0" encoding="utf-8"?>

<resources>

    <string name="hello">Go to main screen and please make long press  on the screen and select widget " twitter widget "</string>

    <string name="app_name">Twitter Widget</string>

</resources>

9)manifest

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.jitesh.uselesswidget"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="4" />

    <uses-permission 

        android:name="android.permission.INTERNET"

        />

    <application

        android:icon="@drawable/icon"

        android:label="@string/app_name" >

        <activity

            android:label="@string/app_name"

            android:name=".JiteshActivity"

            android:theme="@android:style/Theme.Light">

            <intent-filter >

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        

        <receiver android:name=".widgetprovider.UselessWidgetProvider">

            <intent-filter>

                <action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>

            </intent-filter>

            <meta-data android:name="android.appwidget.provider"

                android:resource="@xml/uselessappwidgetprovider"/>

        </receiver>

    </application>

</manifest>

copy the resources to drawable